The polarity isn't critical, but the speakers should be "in phase" to function
properly. That means that they are hooked up the same way. When they are out of
phase, one speaker will vibrate the opposite of the other. An easy way to test
this is to hook it up one way, turn up the base, if the base comes out the
back, it is backwards. Both speakers should be connected in such a way that the
base tone emanates out the front of the speaker.
If the original speakers didn't have different connectors for plus and minus,
or if they are not colored or labeled, it really shouldn't matter, but I
generally check it anyway.
If your radio is designed for an 8 ohm speaker and you install a 4 ohm speaker
you WILL damage your radio. It is absolutely critical that you install the
correct impedance speaker for the radio in your car. If your radio is designed
for a 4 ohm speaker and you install an 8 ohm speaker, the radio will not be
damaged, but the sound quality will suffer.
Paul
In a message dated 4/3/2004 9:34:50 AM Eastern Standard Time,
DONALDDICKINSOND@xxxxxx writes:
> Very interesting discussion of front speaker replacement/repair for 67
>imperial. Let me ask the experts on the rear seat speaker for my 67
>convertible. The rear. as opposed to the front, was a standard size which I
>picked up at Radio shack, my questions:
>
> 1) How am I sure the speaker is connected correctly (polarity)?
>
> 2) I did not get a "small magnet" but the radio seems to drive it OK (except
>front to back balance favors the front
> speaker) what is risk of driving the larger mag?
>
>
> Don Dickinson
> Prospect, KY
>
> 1955 Imperial Newport, Canyon Tan and Desert Sand
> 1967 Imperial Custom Convertible, Ivory and Burgundy
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